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How to Say ‘That's stupid.’ in French

C'est con.

say eh kon

[say eh kon]

💬 Usage Tip: It often just means "that's a shame" or "that's silly", as in C'est con, j'ai raté le train "Too bad, I missed the train".

Phrase Breakdown

C'

[say]

it / that

Short form of ce before a vowel in c'est.

Example

Je réponds : « C'est gentil ».

I reply: “That's kind.”

est

[eh]

is

Third person singular present of be.

Example

C'est important.

It is important.

con

[kon]

stupid

Colloquial term for calling someone foolish or idiotic.

Example

T'es con de dire ça.

You're stupid for saying that.

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